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Chemical characterization of Magnolia biondii (Flos Magnoliae, Xin Yi)

Wolfgang Schühly1, Jeannette Skarbina, Olaf Kunert

  • 1Institute of Pharmaceutical Sciences, Department of Pharmacognosya, University of Graz, 8010 Graz, Austria. wolfgang.schuehly@uni-graz.at

Natural Product Communications
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Qualitative Analysis03:46

Qualitative Analysis

For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...